1/*
2 * Copyright (C) 2010 Apple Inc. All rights reserved.
3 * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
15 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
16 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
18 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
19 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
20 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
21 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
22 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
23 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
24 * THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include "config.h"
28#include "WorkQueue.h"
29
30#include <QLocalSocket>
31#include <QObject>
32#include <QThread>
33#include <QProcess>
34#include <WebCore/NotImplemented.h>
35#include <wtf/Threading.h>
36
37class WorkQueue::WorkItemQt : public QObject {
38    Q_OBJECT
39public:
40    WorkItemQt(WorkQueue* workQueue, WorkItem* workItem)
41        : m_queue(workQueue)
42        , m_source(0)
43        , m_signal(0)
44        , m_workItem(workItem)
45    {
46    }
47
48    WorkItemQt(WorkQueue* workQueue, QObject* source, const char* signal, WorkItem* workItem)
49        : m_queue(workQueue)
50        , m_source(source)
51        , m_signal(signal)
52        , m_workItem(workItem)
53    {
54        connect(m_source, m_signal, SLOT(execute()), Qt::QueuedConnection);
55    }
56
57    ~WorkItemQt()
58    {
59        delete m_workItem;
60    }
61
62    Q_SLOT void execute()
63    {
64        if (m_queue->m_isValid)
65            m_workItem->execute();
66    }
67
68    virtual void timerEvent(QTimerEvent*)
69    {
70        execute();
71        delete this;
72    }
73
74    WorkQueue* m_queue;
75    QObject* m_source;
76    const char* m_signal;
77    WorkItem* m_workItem;
78};
79
80QSocketNotifier* WorkQueue::registerSocketEventHandler(int socketDescriptor, QSocketNotifier::Type type, PassOwnPtr<WorkItem> workItem)
81{
82    ASSERT(m_workThread);
83
84    QSocketNotifier* notifier = new QSocketNotifier(socketDescriptor, type, 0);
85    notifier->setEnabled(false);
86    notifier->moveToThread(m_workThread);
87    WorkQueue::WorkItemQt* itemQt = new WorkQueue::WorkItemQt(this, notifier, SIGNAL(activated(int)), workItem.leakPtr());
88    itemQt->moveToThread(m_workThread);
89    notifier->setEnabled(true);
90    return notifier;
91}
92
93void WorkQueue::platformInitialize(const char*)
94{
95    m_workThread = new QThread();
96    m_workThread->start();
97}
98
99void WorkQueue::platformInvalidate()
100{
101    m_workThread->exit();
102    m_workThread->wait();
103    delete m_workThread;
104    deleteAllValues(m_signalListeners);
105}
106
107void WorkQueue::scheduleWork(PassOwnPtr<WorkItem> item)
108{
109    WorkQueue::WorkItemQt* itemQt = new WorkQueue::WorkItemQt(this, item.leakPtr());
110    itemQt->startTimer(0);
111    itemQt->moveToThread(m_workThread);
112}
113
114void WorkQueue::scheduleWorkAfterDelay(PassOwnPtr<WorkItem> item, double delayInSecond)
115{
116    WorkQueue::WorkItemQt* itemQt = new WorkQueue::WorkItemQt(this, item.leakPtr());
117    itemQt->startTimer(static_cast<int>(delayInSecond * 1000));
118    itemQt->moveToThread(m_workThread);
119}
120
121void WorkQueue::scheduleWorkOnTermination(WebKit::PlatformProcessIdentifier process, PassOwnPtr<WorkItem> workItem)
122{
123    WorkQueue::WorkItemQt* itemQt = new WorkQueue::WorkItemQt(this, process, SIGNAL(finished(int, QProcess::ExitStatus)), workItem.leakPtr());
124    itemQt->moveToThread(m_workThread);
125}
126
127#include "WorkQueueQt.moc"
128